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roger t zerillo
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A photographic technique for estimating egg density of the white pine weevil, Pissodes strobi (Peck)
Roger T. Zerillo · Forest Service, U.S. Dept. of Agriculture, Northeastern Forest Experiment Station
Sayfa sayısı yok · 1975
Biological Photography / Eggs / Photography, Biological / White-pine weevil
Meet the gypsy moth
Roger T. Zerillo · U.S. Dept. of Agriculture, Forest Service, Northeastern Forest Experiment Station
15 sayfa · 1975
Gypsy moth